Liverpool defender Mamadou Sakho is set to respond on Tuesday to UEFAs investigation into his alleged anti-doping violation. Sakho sat out Saturdays 2-2 draw with Newcastle after it emerged shortly beforehand that UEFA was investigating an alleged anti-doping violation - understood to be associated with a fat-burning supplement - following the Europa League tie at Manchester United last month.The France international, who has not been suspended either by Liverpool or UEFA, faces an anxious wait to see whether he will receive a playing ban. He is likely to ask for his B sample to be tested, with the deadline for that request set for Tuesday. Sakho is believed to have used a fat-burner Sky Sports Jamie Carragher, a former Liverpool defender, has hit out at Sakho.Carragher said: Its a nightmare for the player. I think hes let himself and his club down badly, because he was becoming a really important player for Liverpool.There are serious questions to be asked of him.Hes had a great campaign. Hes one of the leaders of the team now. You think of the Borussia Dortmund game, the Manchester United games especially, how well he played in those. Its now how Liverpool fill that void. Carragher on Sakho Jamie Carraghers view on Mamadou Sakho But for a professional footballer - or any sportsman, really - its not acceptable.Sporting Integritys founding director Michelle Verroken told Sky Sports News HQ that using fat-burners carries huge risks.She said: If you are increasing the heart rate the important thing to know is what you are also going to be doing - if you are exercising at the same time - because you are overloading the heart and that really would not be a good thing if your heart has some congenital problem or you are demanding more of your body without proper hydration, proper food. Former Liverpool defender Jamie Carragher believes Mamadou Sakho has let everyone at Liverpool down Some of these fat burners even contain a diuretic to take water out of the body and literally make your body appear smaller. And again, if you are trying to dry out the body when you are involved in intense exercise, there are really big risks in terms of cardiovascular problems.Verroken is not convinced fat-burners improve performance though, and she believes there are alternative means available which are less dangerous.She said: Its a difficult question really, because if your intention is to improve your performance, I think there are far better ways of trying to do this. Also See: Carragher on Sakho Huge risks of fat-burners Toure backs Sakho Sakho probed Bobby Ryan Jersey . - Golden State Warriors coach Mark Jackson sat on the scorers table at Oracle Arena on Wednesday morning. Tom Pyatt Jersey . Advancing to the Champions League quarterfinals should be a formality after Lionel Messi scored a penalty and Dani Alves added a late second to secure a commanding 2-0 advantage over City in the round of 16 on Tuesday. http://www.authenticsenatorspro.com/Mark...enators-jersey/. Bayern winger Franck Ribery marked his league return after recovering from a cracked rib by scoring two goals and setting up two more as the league leaders inflicted the heaviest home defeat on Bremen in the Bundesliga. Craig Anderson Jersey . Saltalamacchia drove in the go-ahead run in the ninth inning, Henderson Alvarez won for the first time in three starts and the Miami Marlins beat the Braves 3-2 on Thursday night. Ottawa Senators Jerseys . The Raptors second-year forward has been one of the primary beneficiaries of the early-season trade, breaking out and becoming a vital part of his teams success on both ends of the floor. Around the league, teams are starting to take notice and feature Ross more predominately in their pre-game scouting reports but its not just the opposition that hes impressing.CHICAGO -- Chicago White Sox outfielder Avisail Garcia has had season-ending left shoulder surgery. The White Sox said doctors at Rush Oak Park Hospital on Tuesday repaired a torn labrum and avulsion fracture in Garcias left shoulder. The 22-year-old Garcia was injured when he attempted a diving catch on Aprril 9 at Colorado.dddddddddddd Garcia is expected to be ready for the start of spring training next season, without any restrictions. Garcia was batting .267 with two home runs, four RBIs and six runs in eight games this season. He had his first career multihomer game the day before getting hurt. 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